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Physics · Thermodynamics

JEE Main 2025 — 3 April, Morning Shift — Question 51

During the melting of a slab of ice at 273 K at atmospheric pressure:

  1. Option A:

    Internal energy of ice-water system remains unchanged

  2. Option B:

    Internal energy of the ice-water system decreases

  3. Option C:

    Positive work is done by the ice-water system on the atmosphere

  4. Option D:

    Positive work is done on the ice-water system by the atmosphere

    Correct

Answer: D

Step-by-step solution

Melting of ice requires heat therefore internal energy increases. But because of decrease in volume

the work done on atmosphere is negative or atmosphere does positive work on ice-water system.

Answer key and solution verified before publishing.

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Exam
JEE Main 2025
Paper
3 April, Morning Shift
Subject
Physics
Chapter
Thermodynamics
Topic
First Law of Thermodynamics

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During the melting of a slab of ice at 273 K at atmospheric pressure: | JEE Main 2025 PYQ with Solution · DhiX AI